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5                                    Introduction to





                                                                  JavaScript










                      Let’s surf
                           JavaScript—A Scripting Language           Features of JavaScript
                           Using JavaScript                          Creating a Web Page with Internal JavaScript
                           Creating a Web Page with
                          External JavaScript                        Statements in JavaScript
                           Input and Output in JavaScript            Some More programs



                   Let’s PLug-in                                                                        Critical Thinking



                     Write any six latest apps or devices.
                     1.   ___________________________                   2.   ___________________________

                     3.   ___________________________                   4.   ___________________________

                     5.   ___________________________                   6.   ___________________________





                  In the previous classes, we have learnt to create web pages using HTML. HTML uses many tags to tell
                  the browser how to display the content on web browsers. The web pages we have learnt to create
                  were static in nature which were not interactive. We need to use another scripting language along
                  with HTML to make web pages interactive and dynamic in nature. JavaScript is one of such types of
                  scripting languages.



                         JAVASCRIPT—A SCRIPTING LANGUAGE

                  JavaScript, often  abbreviated as JS, is a client-side  scripting  language  used for enhancing
                  users’ interaction  with  the  web page  by  making  web pages  dynamic.  The  meaning  of
                  client-side scripting language is that the code written in JavaScript is interpreted by the web browser
                  on  which  the  web  page  is  running.  With  the  help  of  JavaScript,  we can  add different  types  of
                  functionalities in our web pages like taking input from the user, validating the user input, displaying
                  pop-up boxes, etc.







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